Amazon offers Bill Watterson's The Authoritative Calvin and Hobbes Hardcover Book for $5.72. Coupon code "HOLIDAY30" cuts the price to $4. Plus, Prime members qualify for free shipping. (Non-members can spend $35 to qualify for free shipping; otherwise, shipping costs $4.98.) That's the lowest total price we could find by $17. (For further comparison, we saw a similar paperback yesterday for about a buck more.)

Also available is Bill Watterson's The Indispensable Calvin and Hobbes Hardcover Book for $5.74. Coupon code "HOLIDAY30" cuts the price to $4.02. Plus, Prime members qualify for free shipping. (Non-members can spend $35 to qualify for free shipping; otherwise, shipping costs $4.98.) That's the lowest total price we could find by $16.